EP0768395A2 - Feutres pour machines à papier - Google Patents

Feutres pour machines à papier Download PDF

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Publication number
EP0768395A2
EP0768395A2 EP19960120735 EP96120735A EP0768395A2 EP 0768395 A2 EP0768395 A2 EP 0768395A2 EP 19960120735 EP19960120735 EP 19960120735 EP 96120735 A EP96120735 A EP 96120735A EP 0768395 A2 EP0768395 A2 EP 0768395A2
Authority
EP
European Patent Office
Prior art keywords
fibres
machine
hindered
melting point
polyester material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19960120735
Other languages
German (de)
English (en)
Other versions
EP0768395A3 (fr
Inventor
Dana Bruton Eagles
Jeanne Ann Leon
Francis Anthony Ditaranto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Albany International Corp
Original Assignee
Albany International Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27264439&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0768395(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GB898909291A external-priority patent/GB8909291D0/en
Priority claimed from GB898913731A external-priority patent/GB8913731D0/en
Priority claimed from GB898924996A external-priority patent/GB8924996D0/en
Application filed by Albany International Corp filed Critical Albany International Corp
Publication of EP0768395A2 publication Critical patent/EP0768395A2/fr
Publication of EP0768395A3 publication Critical patent/EP0768395A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/90—Papermaking press felts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/902—Woven fabric for papermaking drier section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S162/00—Paper making and fiber liberation
    • Y10S162/903—Paper forming member, e.g. fourdrinier, sheet forming member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24636—Embodying mechanically interengaged strand[s], strand-portion[s] or strand-like strip[s] [e.g., weave, knit, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3065—Including strand which is of specific structural definition
    • Y10T442/3089—Cross-sectional configuration of strand material is specified
    • Y10T442/3114—Cross-sectional configuration of the strand material is other than circular

Definitions

  • This invention relates to paper machine clothing suitable for use in the forming, pressing or drying sections of a paper making machine and has particular reference to paper making machine clothing used in the dryer section of a paper making machine, such as through air drying fabrics, and dryer screens.
  • a slurry of paper making constituents referred to as "furnish” is deposited on a fabric or "wire" and the liquid constituent of the furnish is drawn or extracted through the fabric or wire to produce a self-cohesive sheet.
  • This cohesive sheet is passed to a pressing and drying section of a paper making machine.
  • the paper sheet In the pressing section of the machine, the paper sheet is transported by a felt to a pair of rollers where the felt and paper sheet are passed between the nip of the rollers to dewater and dry the paper sheet.
  • the paper sheet itself may contain all types of chemical finishes and will be at the same time, subjected to an elevated temperature in order to aid the dewatering and drying thereof.
  • Dryer fabrics or "dryer screens" employed in the paper making industry have, traditionally, been formed from a variety of materials such as poly(ethylene terephthalate), polyphenylene sulfide and polypropylene. Each material has different properties and pricing, which affects its relative position in the marketplace.
  • An important property for any material used as a drier screen in a paper making machine is that the material should have good hydrolytic stability and good dimensional stability.
  • Polypropylene is the cheapest material presently available; it has excellent hydrolytic stability, but poor dimensional stability at elevated temperature, and as a result it has only limited use.
  • Poly(ethylene terephthalate) (PET) is moderately priced, has exceptional dimensional stability and reasonable hydrolytic stability.
  • PET Poly(ethylene terephthalate) is the predominant material currently used in the marketplace and in most cases, the hydrolytic stability of poly(ethylene terephthalate) can be improved by the addition of carbodiimide stabilisers.
  • Polyphenylene sulfide has excellent dimensional and hydrolytic stability, but suffers from the disadvantage that it is extremely highly priced, is more difficult to work, and tends to suffer from brittle fracture problems in the crystalline state due to normal flexing experienced on the paper machine.
  • an article of paper making machine clothing suitable for use in the forming, pressing or drying sections of a paper making machine which article includes a fibre structure characterized in that the fibres of said structure comprise a polyester material having a hintered carboxyl group and in that said fibres have a melting point greater than 260°C.
  • the fibres may have a creep extension of less than 10% at 1.1 grams per denier.
  • fibre refers to a shaped polymeric body of high aspect ratio capable of being formed into two or three dimensional articles as in woven or nonwoven fabrics. Fibre further refers to staple, multifilament or monofilament forms. Melting point is defined in this context as the temperature of the highest peak on the endotherm of the plot produced via Differential Scanning Calorimetry. By way of example of how melting point is determined
  • Figure 1 (hereinafter referred to) is a graph of a Differential Scanning Calorimetry response of a commercial polyester with a metling point of 255°C.
  • the fibres may additionally have an initial modulus greater than 25 grams per denier, an elongation at break of greater than 15% and a tenacity of greater than 2 grams per denier.
  • the fibres may have a melting point greater than 265°C and an initial modulus greater than 30 grams per denier and an elongation at break of greater than 25%, a tenacity of 2.2 grams per denier.
  • a further embodiment of the present invention provides that the fibres have a melting point of greater than 280°C and an initial modulus greater than 32 grams per denier, an elongation at break greater than 30%, and a tenacity of greater than 2.3 grams per denier; preferably, the fibres also have a creep extension of less than 8% at 1.5 gram per denier.
  • a further aspect of the present invention provides that the polyester material has carboxyl groups which are hindered by a moiety selected from cycloaliphatic and branched aliphatic glycol.
  • the polyester may be poly(1,4-cyclohexandicarbinyl terephthalate).
  • the cyclohexane ring may be substituted such that the two carbinyl groups may exist in one of two configurations, i.e. the cis- or the trans-configuration. While the precise mechanism is not entirely understood, the cis-configuration imparts a relatively low melting point of the order of 220°C while the trans-configuration has a high melting point approaching 300°C and is highly crystalline.
  • the large size of the cyclohexane moiety within the polyester molecule serves to hinder a hydrolytic attack on the carboxyl group and is thought to provide improved hydrolysis resistance.
  • the thermal properties of the material can be controlled by selection of the relative proportions of the cis- and trans-isomers to produce a material which is eminently suitable for use in high temperature portions of a paper making machine such, for example, as a dryer screen.
  • the polyester material may include a proportion of a stabilizer.
  • Typical stabilisers include carbodiimides present in an amount of 0.5 to 10%, preferably 1 to 4% by weight.
  • the carbodiimide may be that of benzene-2,4-diisocyonate- 1,3,5-tris(1-methylethyl) homopolymer or it may be that of a copolymer of benzene 2,4-diisocyanato-1,3,5-tris(1-methylethyl) with 2,6-diisopropyl dissocyanate such, for example, as that commercially available under the trade name "STABAXOL P" or "STABAXOL P-100", respectively of Rhein-Chemie, of Rheinau GmbH, West Germany.
  • the polyester fibres either alone or incorporating the stabilizer typically have a tensile strength of 2.4 to 4.3 grams per denier.
  • the fibres of the fibre structure in accordance with the present invention may further exhibit a thermal shrinkage at 200°C of 0.2% to 20.5% with a tensile modulus within the range of 34 to 74 grams per denier.
  • the polyester material may be poly(1,4-cyclohexanedicarbinyl terephthalate) and it has been found that the material commercially available under the trade name "KODAR THERMX copolyester 6761" produced by the Eastman Chemical Products Inc., is particularly suitable in this regard.
  • the fibres may be monofilaments of either round or other shaped cross-sections and may extend in the machine direction and/or cross-machine direction.
  • the article may comprise a support layer and a surface layer, at least one of which constitutes said fibre structure.
  • the surface layer may be a felt.
  • the fibre structure may be a batt.
  • the present invention also relates to a method of manufacturing an article of paper machine clothing suitable for use in the forming, pressing or drying section of a papermaking machine, the method comprising producing fibres having a melting point greater than 260°C from a polyester material having a hindered carboxyl group, and forming the fibres into a fibre structure.
  • the present invention further provides the use of fibres having a melting point greater than 260°C and formed from a polyester material having a hindered carboxyl group, to produce an article of paper machine clothing with improved hydrolysis resistance.
  • the carboxyl groups may be hindered by a cycloaliphatic moiety, preferably a cyclohexane moiety, to provide the improved hydrolysis resistance.
  • paper machine clothing in accordance with the present invention is its potential use in high temperature sections of a paper making machine, in particular dryer fabrics and dryer screen fabrics, since the material from which it is made is not readily hydrolyzed.
  • materials in accordance with the present invention show an exceptional degree of stability over time when compared with conventional polyester materials currently employed and it is not uncommon for the half life of the percent retained tensile strength for articles of paper machine clothing in accordance with the present invention to be 1.5 to twice that of the current industry standard.
  • the invention is concerned not only with the production of paper machine clothing (PMC) materials which may be of woven or spiral or of other suitable monofilament structures, in which monofilaments may extend in both the machine direction and the cross direction of the fabric, but also include other PMC structures.
  • PMC paper machine clothing
  • Such polyester may be used to produce PMC fabrics comprised of staple, multifilament, and/or monofilament fibres.
  • Typical range of sizes of monofilaments used in Press Fabrics and Dryer Fabrics are 0.20mm - 1.27mm in diameter or the equivalent mass in cross-section in other cross-section shapes, e.g. square or oval.
  • a polyester commercially available under the trade name "KODAR THERMX copolyester 6761" supplied by the Eastman Chemical Products Inc. was extruded in a 25mm single screw extruder having a screw with a compression ratio of 4.12 and a 40 mesh screen filtration at the end of the barrel.
  • the material was spun after filtration through a 325 mesh screen supported by an 80 mesh screen through a multi-hole die with each hole having a diameter of 0.625mm (0.025”), land length of 1.9mm.
  • the air gap after extrusion was 32mm and the quench water temperature was 66°C.
  • the resultant extrudate was subjected to an overall draw ratio which varied from 3.0 to 4.8 thereby producing a range of denier of the monofilaments.
  • Example 2 The experiment as defined in Example 1 was repeated for a proportion of the same copolyester material having various proportions of up to 5% by weight of a carbodiimide stabilizer material commercially available under the trade name "STABAXOL P-100".
  • STABAXOL P-100 a carbodiimide stabilizer material commercially available under the trade name "STABAXOL P-100”.
  • the properties of the monofilament as extruded and drawn are set out in Table 2.
  • Figure 2 shows graphically how the hydrolysis resistance of the various stabilized and unstabilized monofilaments described in Examples 1 and 2 behave over a period of 32 days when subjected to saturated steam in an autoclave at a pressure of 2 atm absolute pressure.
  • the five samples of Table 2 are illustrated together with a commercial monofilament produced from poly(ethylene terephthalate) and stabilized with a cabodiimide.
  • the significant point on the graph is the period in which the retained tensile strength has been reduced to 50%.
  • the extruded filament travelled through the bath for an approximate quench length of 0.8mm.
  • the filament exited the bath horizontally and travelled to a first roll stand operating at a speed of 8m/min.
  • the filament then passed through a hot air circulating oven operating at 121°C.
  • the oven was 1.6 metres long.
  • the filament exited the oven and travelled to a second roll stand operating at 28m/min.
  • the filament then passed through a second oven operating at 149°C and travelled to a third roll stand operating at 39m/min.
  • the second oven had a length of 1.6 metres.
  • the filament then passed through a third oven operating at 177°F and passed to fourth roll stand operating at a speed of 32m/min.
  • the third oven had a length of 1.6 metres.
  • the oriented monofilament was then collected on a spool via a tension controlled winder.
  • the product when tested had a tensile strength of 3.4 gpd, an elongation at break of 23.5%, an initial tensile modulus of 41.0 gpd and a thermal free shrinkage at 200°C of 7.6%.
  • Example 3 is similar to Example 3 with the following changes in roll stand speeds.
  • the speeds for the first, second, third and fourth roll stands were 8, 28, 28 and 25 m/min, respectively.
  • the product which resulted had a tensile strength of 2.7 gpd, an elongation at break of 34.8%, an initial tensile modulus of 36.3 gpd and a thermal free shrinkage at 200°C of 4.6%.
  • This Example is similar to Examples 3 and 4, equipment wise, but with changes in both oven temperatures and roll stand speeds.
  • the oven temperatures were 177°, 204° and 500° for ovens one, two and three, respectively.
  • the speeds for the first, second, third and fourth roll stands were 8, 36, 39 and 39 m/min, respectively.
  • the product which resulted had a tensile strength of 4.6 gpd, an elongation at break of 7.4%, an initial tensile modulus of 74.4 gpd and a thermal free shrinkage at 200°C of 11.6%.
  • Example 5 is similar to Example 5 with the following changes in roll stand speeds.
  • the speeds for the first, second, third and fourth roll stands were 8, 32, 32 and 32m/min, respectively.
  • the product which resulted had a tensile strength of 4.0 gpd, an elongation at break of 18.0%, an initial tensile modulus of 55.3 gpd and a thermal free shrinkage at 200°C of 5.9%.
  • the filament then passed through a hot air circulating oven operating at 121°C.
  • the oven was 2.7 meters long.
  • the filament then passed through a second oven operating at 191°C and travelled to a third roll stand operating at 70 m/min.
  • the second oven had a length of 2.4 meters.
  • the filament then passed through a third oven operating at 268°C and passed to a fourth roll stand operating at a speed of 62m/min.
  • the third oven had a length of 2.7 meters, The oriented monofilament was then collected on a spool via a tension controlled winder.
  • the product when tested had a tensile strength of 2.5 gpd, an elongation at break of 33%, and an initial modulus of 32 gpd.
  • Figure 3 shows graphically how the hydrolytic resistance of the stabilized monofilment described in Example 7 behaves over a period of 38 days when subjected to saturated steam in an autoclave at a pressure of 2 atm absolute pressure.
  • the filament then passed through a hot air circulating oven at 179°C.
  • the oven was 2.7 meters long.
  • the filament then passed through a second oven operating at 231°C and travelled to a third roll stand operating at 58m/min.
  • the second oven had a length of 2.7 meters.
  • the third oven had a length of 2.7 meters.
  • the oriented monofilament was then collected on a spool via a tension controlled winder.
  • the product when tested had a tensile strength of 2.6 gpd, an elongation at break of 39%, and an initial modulus of 32 gpd.
  • Figure 4 shows graphically how the hydrolytic resistance of the stabilized monofilament described in Example 8 behaves over a period of 38 days when subjected to saturated steam in an autoclave at a pressure of 2 atm absolute pressure.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Paper (AREA)
  • Filtering Materials (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Woven Fabrics (AREA)
  • Multicomponent Fibers (AREA)
  • Nonwoven Fabrics (AREA)
  • Materials For Medical Uses (AREA)
  • Dental Preparations (AREA)
  • Cosmetics (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
EP19960120735 1989-04-24 1990-04-23 Feutres pour machines à papier Withdrawn EP0768395A3 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
GB898909291A GB8909291D0 (en) 1989-04-24 1989-04-24 Paper making machine felts
GB8909291 1989-04-24
GB898913731A GB8913731D0 (en) 1989-06-15 1989-06-15 Paper making machine fabrics
GB8913731 1989-06-15
GB898924996A GB8924996D0 (en) 1989-11-06 1989-11-06 Improvements in and relating to monofilaments
GB8924996 1989-11-06
EP19900907246 EP0473633B2 (fr) 1989-04-24 1990-04-23 Feutres pour machines a papier

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP19900907246 Division EP0473633B2 (fr) 1989-04-24 1990-04-23 Feutres pour machines a papier
EP90907246.4 Division 1990-11-06

Publications (2)

Publication Number Publication Date
EP0768395A2 true EP0768395A2 (fr) 1997-04-16
EP0768395A3 EP0768395A3 (fr) 1998-01-28

Family

ID=27264439

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19960120735 Withdrawn EP0768395A3 (fr) 1989-04-24 1990-04-23 Feutres pour machines à papier
EP19900907246 Expired - Lifetime EP0473633B2 (fr) 1989-04-24 1990-04-23 Feutres pour machines a papier

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19900907246 Expired - Lifetime EP0473633B2 (fr) 1989-04-24 1990-04-23 Feutres pour machines a papier

Country Status (15)

Country Link
US (1) US5169499B1 (fr)
EP (2) EP0768395A3 (fr)
JP (1) JPH04500247A (fr)
KR (1) KR0171878B1 (fr)
AT (1) ATE155180T1 (fr)
AU (1) AU638013B2 (fr)
BR (1) BR9006880A (fr)
CA (1) CA2042062C (fr)
DE (1) DE69031037T3 (fr)
DK (1) DK0473633T3 (fr)
ES (1) ES2106030T5 (fr)
FI (1) FI117517B (fr)
NO (1) NO178797C (fr)
NZ (1) NZ233437A (fr)
WO (1) WO1990012918A1 (fr)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9125889D0 (en) * 1991-12-05 1992-02-05 Albany Research Uk Improvements in and relating to paper machine clothing
DE4142788A1 (de) * 1991-12-23 1993-06-24 Wuertt Filztuchfab Materialbahn
CA2087477A1 (fr) * 1992-02-03 1993-08-04 Jennifer A. Gardner Monofilaments de copolyester haute temperature avec resistance sur noeud amelioree pour toile secheuse
DE4307392C2 (de) * 1993-03-10 2001-03-29 Klaus Bloch Monofil mit erhöhter Hydrolysebeständigkeit auf Basis Polyester für die Verwendung in technischen Geweben und Verfahren zu dessen Herstellung
DE4307394C1 (de) * 1993-03-10 1994-06-16 Klaus Bloch Monofil mit erhöhter Hydrolysebeständigkeit auf Basis Polyester und Verfahren zu dessen Herstellung
US5981062A (en) * 1993-04-26 1999-11-09 Johns Manville International, Inc. Monofilament made from a blend of a polyester having a polyhydric alcohol component of 1,4-cyclohexanedimethanol, and a polyamide
CA2119678A1 (fr) * 1993-04-26 1994-10-27 Herbert D. Stroud, Jr. Monofilament fait d'un melange de polyester comprenant un composant polyhydroxyle a base de 1,4-cyclohexanedimethanol et un polyamide
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US5464890A (en) * 1993-11-12 1995-11-07 Shakespeare Company Polyester monofilaments extruded from a high temperature polyester resin blend with increased resistance to hydrolytic and thermal degradation and fabrics thereof
DE4340869A1 (de) * 1993-12-01 1995-06-08 Hoechst Ag Multifilamentgarne für technische Einsatzgebiete aus Poly-(1,4-bis-methylen-cyclohexan-terephthalat) und Verfahren zu ihrer Herstellung
US5424125A (en) * 1994-04-11 1995-06-13 Shakespeare Company Monofilaments from polymer blends and fabrics thereof
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EP0828793B1 (fr) * 1995-06-02 1999-04-28 Eastman Chemical Company Polyesters d'acide 2,6-naphtalenedicarboxylique presentant une stabilite hydrolitique amelioree
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EP1304402B1 (fr) 2000-07-14 2006-08-30 Teijin Limited Fibre en polyester
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US6763855B2 (en) * 2001-10-30 2004-07-20 Albany International Corp. Through-air-drying base fabric
US6837275B2 (en) * 2002-11-07 2005-01-04 Albany International Corp. Air channel dryer fabric
US6837276B2 (en) * 2002-11-07 2005-01-04 Albany International Corp. Air channel dryer fabric
US6818293B1 (en) * 2003-04-24 2004-11-16 Eastman Chemical Company Stabilized polyester fibers and films
US6989080B2 (en) * 2003-06-19 2006-01-24 Albany International Corp. Nonwoven neutral line dryer fabric
US20070173585A1 (en) * 2004-12-22 2007-07-26 Sevenich Gregory J Polyester nanocomposite filaments and fiber
DE502006005768D1 (de) 2005-09-21 2010-02-11 Raschig Gmbh Hydrolysestabilisatorformulierungen
US7617846B2 (en) * 2006-07-25 2009-11-17 Albany International Corp. Industrial fabric, and method of making thereof
US7644738B2 (en) * 2007-03-28 2010-01-12 Albany International Corp. Through air drying fabric
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Also Published As

Publication number Publication date
EP0768395A3 (fr) 1998-01-28
CA2042062A1 (fr) 1990-10-25
FI117517B (fi) 2006-11-15
DK0473633T3 (da) 1997-08-11
ATE155180T1 (de) 1997-07-15
WO1990012918A1 (fr) 1990-11-01
KR920701566A (ko) 1992-08-12
KR0171878B1 (ko) 1999-05-01
FI912969A0 (fi) 1991-06-18
DE69031037D1 (de) 1997-08-14
ES2106030T5 (es) 2008-04-16
AU638013B2 (en) 1993-06-17
JPH04500247A (ja) 1992-01-16
EP0473633A1 (fr) 1992-03-11
NO913471L (no) 1991-09-04
NO913471D0 (no) 1991-09-04
DE69031037T2 (de) 1997-11-20
EP0473633B2 (fr) 2007-11-21
NO178797C (no) 1996-06-05
NO178797B (no) 1996-02-26
AU5536890A (en) 1990-11-16
BR9006880A (pt) 1991-08-27
US5169499B1 (en) 1994-05-10
ES2106030T3 (es) 1997-11-01
CA2042062C (fr) 1995-11-14
EP0473633B1 (fr) 1997-07-09
US5169499A (en) 1992-12-08
DE69031037T3 (de) 2008-05-21
NZ233437A (en) 1992-07-28

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